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Travel and Outdoor Equipment Price Comparison > Sleeping Bags > 3 Season Sleeping Bags
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Marmot created the Trestles elite eco series to prove sustainable design does not have to mean a drop in performance. Lightweight yet durable, the shell and lining are made with recycled polyester. Filled with HL-elixR eco synthetic insulation, the 100% recycled fibres provide maximum warmth, a soft feel, and high loft. Practical and comfortable, two zips – one full, one partial – aid access and allow the front to be folded down flat. The Trestles elite eco 15 sleeping bag has a three-plus season rating. Helping to extend your outdoor adventures, it will take you from early spring through to late autumn. [Full Details]
£200
From Ellis Brigham
Marmot created the Trestles elite eco series to prove sustainable design does not have to mean a drop in performance. Lightweight yet durable, the shell and lining are made with recycled polyester. Filled with HL-elixR eco synthetic insulation, the 100% recycled fibres provide maximum warmth, a soft feel, and high loft. Practical and comfortable, two zips – one full, one partial – aid access and allow the front to be folded down flat. With a three-season rating, the Trestles elite eco 20 Long sleeping bag is an excellent choice for UK backpacking adventures. [Full Details]
The Forte 20 Long is a three-season sleeping bag packed with PrimaLoft RISe synthetic insulation. Containing 80% recycled content: the filling is lightweight, lofty, and resilient to ensure reliable warmth levels. An excellent choice for UK camping and backpacking trips, features like the Thermo Gills help regulate body temperature in fluctuating conditions.Designed around Nemo’s Classic Spoon shape, the Forte is ideal for side-sleepers. Generously cut at the elbows and knees, you can lie on your side without being constricted. Ideal for taller users, this Long version has a maximum user height of 198cm. [Full Details]
Nemo’s top-of-the-range Women’s Riff 15 Regular is an ultralight sleeping bag offering 3+ season performance. Packed with 800-fill hydrophobic down insulation, it gives an optimal balance of warmth, weight, and compressibility, ideal for backpacking adventures.Constructed with an ultralight Spoon shape: extra room at the elbows and knees ensure side-sleeping comfort. A tapered core and sculpted foot box minimise bulk to give an ideal fit with no wasted space. [Full Details]
3 Season Sleeping Bags - Compare Prices
For three-season adventures in the UK and similar climates abroad, the Ascent 500 sleeping bag makes a top pick. Filled with 650-fill hydrophobic down: trapezoid-shaped box wall baffles help the insulation loft fully to avoid cold spots. A wide mummy shape and angled foot box ensure a comfortable night's sleep. [Full Details]
For three-season adventures in the UK and similar climates abroad, the Ascent 500 XL sleeping bag makes a top pick. Filled with 650-fill hydrophobic down: trapezoid-shaped box wall baffles help the insulation loft fully to avoid cold spots. A wide mummy shape and angled foot box ensure a comfortable night's sleep. Ideal for taller users, this XL version has a maximum user height of 200cm. [Full Details]
Choose the Women’s Ascent 700 sleeping bag for backpacking in the UK and similar climates abroad. 3 season rated; you can use it from spring through to autumn. Filled with 650-fill hydrophobic down: trapezoid-shaped box wall baffles help the insulation loft fully to avoid cold spots. A wide mummy shape and angled foot box ensure a comfortable night's sleep.The women’s specific cut is slightly shorter than the regular bag but filled with the same amount of down. Narrower at the shoulders and marginally wider at the hips; it balances comfort and efficiency. [Full Details]
Choose the Ascent 700 sleeping bag for backpacking in the UK and similar climates abroad. 3+ season rated; you can use it from early spring through to late autumn. Filled with 650-fill hydrophobic down: trapezoid-shaped box wall baffles help the insulation loft fully to avoid cold spots. A wide mummy shape and angled foot box ensure a comfortable night's sleep. [Full Details]
Choose the Ascent 700 XL sleeping bag for backpacking in the UK and similar climates abroad. 3+ season rated; you can use it from early spring through to late autumn. Filled with 650-fill hydrophobic down: trapezoid-shaped box wall baffles help the insulation loft fully to avoid cold spots. A wide mummy shape and angled foot box ensure a comfortable night's sleep. Ideal for taller users, this XL version has a maximum user height of 200cm. [Full Details]
Rab made the women’s specific Neutrino 400 sleeping bag with summer alpine and mountain use in mind. Light, warm, and highly compressible, the plush 800 fill down has a hydrophobic treatment, for improved performance in damp conditions. Optimised for warmth, the trapezoidal baffle chambers help prevent down migration and eliminate cold spots to ensure outstanding sleeping comfort. [Full Details]
This is the latest version of the Neutrino 400 sleeping bag. Ideal for three-season mountain missions, it features premium 800-fill hydrophobic down protected by a new Pertex Quantum recycled ripstop outer. Both the insulation and shell fabric have water repellent treatments, ensuring reliable performance in the damp. A trapezoidal box wall construction maximises warmth levels, while the tapered shape keeps weight and bulk in check. [Full Details]
This is the latest version of the Neutrino 400 XL sleeping bag. Ideal for three-season mountain missions, it features premium 800-fill hydrophobic down protected by a new Pertex Quantum recycled ripstop outer. Both the insulation and shell fabric have water repellent treatments, ensuring reliable performance in the damp. A trapezoidal box wall construction maximises warmth levels, while the tapered shape keeps weight and bulk in check. Ideal for taller users, this XL version has a maximum user height of 200cm. [Full Details]
Rab designed the Neutrino Pro 600 sleeping bag primarily for alpine climbers and lightweight mountaineering trips. Water resistant Pertex Quantum Pro protects the plush 800 fill down within, which has a hydrophobic treatment for improved performance in damp conditions. Optimised for warmth, the trapezoidal baffle chambers help prevent down migration and eliminate cold spots to ensure outstanding sleeping comfort. [Full Details]
Rab’s Mythic 400 is an ultralight three-season sleeping bag. Acclimatised to the mountains, it offers climbers and adventurers warmth without a weight compromise. A trapezoidal box wall construction maximises the loft of the 900-fill hydrophobic down; chevron baffles help prevent cold spots. To protect the insulation, Rab uses 7-denier Atmos fabric. A superlight ripstop material, it offers both wind and water resistance. Letting you shed grams while staying warm, the Mythic is sure to impress. [Full Details]
Building on the strength of their Mythic series, Rab continue to push the boundaries in sleeping bag design. Looking at ways to increase thermal efficiency further, they incorporated Thermo Ionic Lining Technology into the Mythic Ultra 360's construction. A heat-reflecting liner, it significantly increases warmth, thus allowing Rab to reduce the amount of down needed for a lower weight without a comfort reduction. Paired with the proven chevron chambers, trapezoidal baffles and 900 fill hydrophobic down, the performance it can achieve is outstanding. With a category-redefining warmth-to-weight ratio, the Mythic Ultra 360 is a specialist piece for those looking to save every gram. [Full Details]
3 Season Sleeping Bags Buyers Guide
3 season sleeping bags probably have the longest usage range of any season rating. They are suitable for British summers, although may be too hot if the weather gets nice. And they can be used during the Easter period as well as late autumn.
They are not to be recommended for use during the winter, and definitely not in extreme weather conditions in mountainous or arctic areas.
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